1.2 KiB
1.2 KiB
id | title | challengeType | forumTopicId | dashedName |
---|---|---|---|---|
5900f4ff1000cf542c510011 | Problem 402: Integer-valued polynomials | 5 | 302070 | problem-402-integer-valued-polynomials |
--description--
It can be shown that the polynomial n^4 + 4n^3 + 2n^2 + 5n
is a multiple of 6 for every integer n
. It can also be shown that 6 is the largest integer satisfying this property.
Define M(a, b, c)
as the maximum m
such that n^4 + an^3 + bn^2 + cn
is a multiple of m
for all integers n
. For example, M(4, 2, 5) = 6
.
Also, define S(N)
as the sum of M(a, b, c)
for all 0 < a, b, c ≤ N
.
We can verify that S(10) = 1\\,972
and S(10\\,000) = 2\\,024\\,258\\,331\\,114
.
Let F_k
be the Fibonacci sequence:
F_0 = 0
,F_1 = 1
andF_k = F_{k - 1} + F_{k - 2}
fork ≥ 2
.
Find the last 9 digits of \sum S(F_k)
for 2 ≤ k ≤ 1\\,234\\,567\\,890\\,123
.
--hints--
integerValuedPolynomials()
should return 356019862
.
assert.strictEqual(integerValuedPolynomials(), 356019862);
--seed--
--seed-contents--
function integerValuedPolynomials() {
return true;
}
integerValuedPolynomials();
--solutions--
// solution required